jsonapi-serializer/spec/lib/object_serializer_spec.rb

313 lines
12 KiB
Ruby

require 'spec_helper'
describe FastJsonapi::ObjectSerializer do
include_context 'movie class'
include_context 'group class'
context 'when testing instance methods of object serializer' do
it 'returns correct hash when serializable_hash is called' do
options = {}
options[:meta] = { total: 2 }
options[:links] = { self: 'self' }
options[:include] = [:actors]
serializable_hash = MovieSerializer.new([movie, movie], options).serializable_hash
expect(serializable_hash[:data].length).to eq 2
expect(serializable_hash[:data][0][:relationships].length).to eq 4
expect(serializable_hash[:data][0][:attributes].length).to eq 2
expect(serializable_hash[:meta]).to be_instance_of(Hash)
expect(serializable_hash[:links]).to be_instance_of(Hash)
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included][0]).to be_instance_of(Hash)
expect(serializable_hash[:included].length).to eq 3
serializable_hash = MovieSerializer.new(movie).serializable_hash
expect(serializable_hash[:data]).to be_instance_of(Hash)
expect(serializable_hash[:meta]).to be nil
expect(serializable_hash[:links]).to be nil
expect(serializable_hash[:included]).to be nil
end
it 'returns correct nested includes when serializable_hash is called' do
# 3 actors, 3 agencies
include_object_total = 6
options = {}
options[:include] = [:actors, :'actors.agency']
serializable_hash = MovieSerializer.new([movie], options).serializable_hash
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included].length).to eq include_object_total
(0..include_object_total-1).each do |include|
expect(serializable_hash[:included][include]).to be_instance_of(Hash)
end
options[:include] = [:'actors.agency']
serializable_hash = MovieSerializer.new([movie], options).serializable_hash
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included].length).to eq include_object_total
(0..include_object_total-1).each do |include|
expect(serializable_hash[:included][include]).to be_instance_of(Hash)
end
end
it 'returns correct number of records when serialized_json is called for an array' do
options = {}
options[:meta] = { total: 2 }
json = MovieSerializer.new([movie, movie], options).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data'].length).to eq 2
expect(serializable_hash['meta']).to be_instance_of(Hash)
end
it 'returns correct id when serialized_json is called for a single object' do
json = MovieSerializer.new(movie).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['id']).to eq movie.id.to_s
end
it 'returns correct json when serializing nil' do
json = MovieSerializer.new(nil).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']).to eq nil
end
it 'returns correct json when record id is nil' do
movie.id = nil
json = MovieSerializer.new(movie).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['id']).to be nil
end
it 'returns correct json when has_many returns []' do
movie.actor_ids = []
json = MovieSerializer.new(movie).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['relationships']['actors']['data'].length).to eq 0
end
it 'returns correct json when belongs_to returns nil' do
movie.owner_id = nil
json = MovieSerializer.new(movie).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['relationships']['owner']['data']).to be nil
end
it 'returns correct json when belongs_to returns nil and there is a block for the relationship' do
movie.owner_id = nil
json = MovieSerializer.new(movie, {include: [:owner]}).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['relationships']['owner']['data']).to be nil
end
it 'returns correct json when has_one returns nil' do
supplier.account_id = nil
json = SupplierSerializer.new(supplier).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']['relationships']['account']['data']).to be nil
end
it 'returns correct json when serializing []' do
json = MovieSerializer.new([]).serialized_json
serializable_hash = JSON.parse(json)
expect(serializable_hash['data']).to eq []
end
describe '#as_json' do
it 'returns a json hash' do
json_hash = MovieSerializer.new(movie).as_json
expect(json_hash['data']['id']).to eq movie.id.to_s
end
it 'returns multiple records' do
json_hash = MovieSerializer.new([movie, movie]).as_json
expect(json_hash['data'].length).to eq 2
end
it 'removes non-relevant attributes' do
movie.director = 'steven spielberg'
json_hash = MovieSerializer.new(movie).as_json
expect(json_hash['data']['director']).to eq(nil)
end
end
it 'returns errors when serializing with non-existent includes key' do
options = {}
options[:meta] = { total: 2 }
options[:include] = [:blah_blah]
expect { MovieSerializer.new([movie, movie], options).serializable_hash }.to raise_error(ArgumentError)
end
it 'does not throw an error with non-empty string array includes key' do
options = {}
options[:include] = ['actors']
expect { MovieSerializer.new(movie, options) }.not_to raise_error
end
it 'returns keys when serializing with empty string/nil array includes key' do
options = {}
options[:meta] = { total: 2 }
options[:include] = ['']
expect(MovieSerializer.new([movie, movie], options).serializable_hash.keys).to eq [:data, :meta]
options[:include] = [nil]
expect(MovieSerializer.new([movie, movie], options).serializable_hash.keys).to eq [:data, :meta]
end
end
context 'nested includes' do
it 'has_many to belongs_to: returns correct nested includes when serializable_hash is called' do
# 3 actors, 3 agencies
include_object_total = 6
options = {}
options[:include] = [:actors, :'actors.agency']
serializable_hash = MovieSerializer.new([movie], options).serializable_hash
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included].length).to eq include_object_total
(0..include_object_total-1).each do |include|
expect(serializable_hash[:included][include]).to be_instance_of(Hash)
end
options[:include] = [:'actors.agency']
serializable_hash = MovieSerializer.new([movie], options).serializable_hash
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included].length).to eq include_object_total
(0..include_object_total-1).each do |include|
expect(serializable_hash[:included][include]).to be_instance_of(Hash)
end
end
it '`has_many` to `belongs_to` to `belongs_to` - returns correct nested includes when serializable_hash is called' do
# 3 actors, 3 agencies, 1 state
include_object_total = 7
options = {}
options[:include] = [:actors, :'actors.agency', :'actors.agency.state']
serializable_hash = MovieSerializer.new([movie], options).serializable_hash
expect(serializable_hash[:included]).to be_instance_of(Array)
expect(serializable_hash[:included].length).to eq include_object_total
actors_serialized = serializable_hash[:included].find_all { |included| included[:type] == :actor }.map { |included| included[:id].to_i }
agencies_serialized = serializable_hash[:included].find_all { |included| included[:type] == :agency }.map { |included| included[:id].to_i }
states_serialized = serializable_hash[:included].find_all { |included| included[:type] == :state }.map { |included| included[:id].to_i }
movie.actors.each do |actor|
expect(actors_serialized).to include(actor.id)
end
agencies = movie.actors.map(&:agency).uniq
agencies.each do |agency|
expect(agencies_serialized).to include(agency.id)
end
states = agencies.map(&:state).uniq
states.each do |state|
expect(states_serialized).to include(state.id)
end
end
it 'has_many => has_one returns correct nested includes when serializable_hash is called' do
options = {}
options[:include] = [:movies, :'movies.advertising_campaign']
serializable_hash = MovieTypeSerializer.new([movie_type], options).serializable_hash
movies_serialized = serializable_hash[:included].find_all { |included| included[:type] == :movie }.map { |included| included[:id].to_i }
advertising_campaigns_serialized = serializable_hash[:included].find_all { |included| included[:type] == :advertising_campaign }.map { |included| included[:id].to_i }
movies = movie_type.movies
movies.each do |movie|
expect(movies_serialized).to include(movie.id)
end
advertising_campaigns = movies.map(&:advertising_campaign)
advertising_campaigns.each do |advertising_campaign|
expect(advertising_campaigns_serialized).to include(advertising_campaign.id)
end
end
it 'belongs_to: returns correct nested includes when nested attributes are nil when serializable_hash is called' do
class Movie
def advertising_campaign
nil
end
end
options = {}
options[:include] = [:movies, :'movies.advertising_campaign']
serializable_hash = MovieTypeSerializer.new([movie_type], options).serializable_hash
movies_serialized = serializable_hash[:included].find_all { |included| included[:type] == :movie }.map { |included| included[:id].to_i }
movies = movie_type.movies
movies.each do |movie|
expect(movies_serialized).to include(movie.id)
end
end
it 'polymorphic throws an error that polymorphic is not supported' do
options = {}
options[:include] = [:groupees]
expect(-> { GroupSerializer.new([group], options)}).to raise_error(NotImplementedError)
end
end
context 'when testing included do block of object serializer' do
it 'should set default_type based on serializer class name' do
class BlahSerializer
include FastJsonapi::ObjectSerializer
end
expect(BlahSerializer.record_type).to be :blah
end
it 'should set default_type for a multi word class name' do
class BlahBlahSerializer
include FastJsonapi::ObjectSerializer
end
expect(BlahBlahSerializer.record_type).to be :blah_blah
end
it 'shouldnt set default_type for a serializer that doesnt follow convention' do
class BlahBlahSerializerBuilder
include FastJsonapi::ObjectSerializer
end
expect(BlahBlahSerializerBuilder.record_type).to be_nil
end
it 'should set default_type for a namespaced serializer' do
module V1
class BlahSerializer
include FastJsonapi::ObjectSerializer
end
end
expect(V1::BlahSerializer.record_type).to be :blah
end
end
context 'when serializing included, serialize any links' do
before do
ActorSerializer.link(:self) do |actor_object|
actor_object.url
end
end
subject(:serializable_hash) do
options = {}
options[:include] = [:actors]
MovieSerializer.new(movie, options).serializable_hash
end
let(:actor) { movie.actors.first }
let(:url) { "http://movies.com/actors/#{actor.id}" }
it 'returns correct hash when serializable_hash is called' do
expect(serializable_hash[:included][0][:links][:self]).to eq url
end
end
end